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35results about How to "Control number" patented technology

Polycarbonate containing nonlinear optical chromophores, synthesis method and application thereof

The present invention relates to a polycarbonate containing nonlinear optical chromophores, a synthesis method and an application thereof. According to the present invention, bischloroformate and nonlinear optical chromophores containing double hydroxyl groups are subjected to copolymerization so as to successfully introduce the nonlinear optical chromophore molecule into the polymer chain segment of the polycarbonate, and concurrently a bisphenol monomer is introduced to adjust the number of the nonlinear optical chromophore molecules in the chain segment so as to effectively prepare the suspension connection type polycarbonate electro-optic material containing a certain amount of the nonlinear optical chromophore molecules; after the polycarbonate containing the nonlinear optical chromophores is dissolved with an organic solvent and then is subjected to film coating, the maximum electro-optic coefficient of the prepared polarized electro-optic polymer film is 75 pm/V, wherein the prepared electro-optical material has a high glass transition temperature, such that the nonlinear optical chromophore molecules have good orientational stability in the material; and the polycarbonate containing the nonlinear optical chromophores has the following structure.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI

Single unit rotation type combined gas explosion sound source

InactiveCN109760805AImprove work efficiencyReduce mine clearance costsMine-sweepingGas explosionPiston cylinder
The invention discloses a single unit rotation type combined gas explosion sound source, and belongs to the technical field of naval mine resistance. The gas explosion sound source comprises a servo motor, a rotor, a stator shell, a piston and a piston cylinder; a cavity part of the rotor, which is provided with release holes, is inserted into the inside of the stator; both ends of the piston arerespectively positioned in the rotor and the piston cylinder; the piston cylinder is coaxially abutted with the stator shell; high-pressure gas inside the rotor is discharged and released by periodicopening and closing of the corresponding release holes on the rotor and a stator so as to generate a series of acoustic wave pulses oscillating on a wide band in water; by regulating displacement of the piston in the rotor, the number of opened ports of the rotor is controlled to regulate strength of the sound source; and the rotor is driven to rotate by the servo motor, when the opened release holes of the rotor are coincided with the release holes of the stator, a pulse with a specific frequency spectrum is generated, and the continuous change of the opened ports of the rotor in the continuous transmission process implements smooth control of the frequency spectrum. According to the invention, a physical field generated by a ship can be effectively simulated.
Owner:CSIC NO 710 RES & DEV INST

Detection Method of External Field Wavefront Aberration in Large Aperture Space Optical System

The invention discloses a measuring method of an outfield wave front aberration of a large-aperture space optical system, and belongs to the technical field of advanced optical system manufacturing. The measuring method aims at solving the problem that the existing detection means cannot meet a measuring requirement of the outfield wave front aberration of the large-aperture space optical system. The measuring method comprises the steps that 1, a measuring condition is initialized, a four-dimensional adjustment rack and a small-aperture parallel light generator are placed in appropriate positions at the front of a to-be-measured optical system, the small-aperture parallel light generator is turned to a specified viewing field by auxiliary equipment, x-direction and y-direction rotating devices are locked dead, an optical parameter of the to-be-measured optical system, an aperture of small-aperture parallel light and the number of subapertures required by measuring are input to a control computer, and the control computer generates an initial position and a motion locus of the small-aperture parallel light generator according to an initial parameter; 2, a wave front slope is measured; and 3, the wave front aberration is fit. A wave surface slop can be measured point by point in a time-sharing manner, and a large-aperture parallel light tube is not required, so that the difficulty of the outfield wave front aberration of the system is reduced.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

sea surface temperature time sequence prediction method based on PSO double-objective optimization

The invention belongs to the technical field of prediction or optimization, and discloses a sea surface temperature time sequence prediction method based on PSO double-objective optimization, which comprises the following steps: optimizing sea surface temperature prediction model parameters by utilizing an improved PSO double-objective optimization algorithm to obtain an optimized parameter combination; and predicting the sea surface temperature by using the obtained optimization parameter combination. According to the method, the PSO algorithm is improved, and the Pareto dominated relationship is adopted to measure the advantages and disadvantages of the solution.The global search capability of the PSO algorithm is increased by utilizing a large inertia weight, bidirectional local searchis carried out on a non-dominated solution set, the local search capability of the PSO algorithm is enhanced, the PSO algorithm has a high optimization capability, and the Pareto frontier of a real solution can be approached. The local search capability of the particles is enhanced, the diversity of the non-dominated solutions is increased, and the number of the non-dominated solutions is maintained by using the crowded distance, so that the distribution uniformity of the non-dominated solutions is improved.
Owner:SHANGHAI OCEAN UNIV

Styrene-butadiene latex and preparation method and application thereof

The invention belongs to the field of asphalt modifiers, and particularly relates to styrene-butadiene latex and a preparation method and application thereof. The preparation method provided by the invention comprises the following steps: a) mixing an emulsifier, a molecular weight regulator, a dispersing agent, a free radical stabilizer, an electrolyte and water, regulating the temperature, and adding butadiene, styrene, a tertiary amine monomer and an initiator into the mixed system for reaction when the temperature of the mixed system reaches 5-15 DEG C, b) after the reaction is carried outfor 4-6 hours, adding a cross-linking agent into the reaction system, then heating to 20-40 DEG C, and continuously reacting for 0.5-2 hours, and c) after the reaction is finished, mixing the obtained reaction product with an anti-aging agent, and degassing to obtain the styrene-butadiene latex. According to the method provided by the invention, by adopting a low-high temperature two-stage methodfor polymerization, adding a proper amount of tertiary amine monomer to participate in copolymerization and adding a proper amount of organic matter containing an active halogen group as a cross-linking agent, the prepared styrene-butadiene latex has relatively high solid content and excellent asphalt modification capability.
Owner:山东京博中聚新材料有限公司

A Single Rotary Combined Gas Explosion Sound Source

InactiveCN109760805BReduce mine clearance costsImprove work efficiencyMine-sweepingSound sourcesFrequency spectrum
The invention discloses a single rotary combined gas explosion sound source, which belongs to the technical field of mine countermeasures. The gas explosion sound source includes a servo motor, a rotor, a stator housing, a piston and a piston cylinder; the cavity part of the rotor with a release hole is inserted into the interior of the stator, and the two ends of the piston are respectively located in the rotor and the piston cylinder, and the piston cylinder and the stator The shells are coaxially docked; the high-pressure gas inside the rotor will be released through the periodic opening and closing of the corresponding release holes on the rotor and stator, and a series of broadband oscillating sound wave pulses will be generated in the water; by adjusting the displacement of the piston in the rotor Control the number of ports opened by the rotor to adjust the intensity of the sound source; the rotor is driven by the servo motor to rotate, and when the release hole opened by the rotor coincides with the release hole of the stator, pulses of a specific frequency spectrum are generated, and the ports opened by the rotor are in continuous emission. Continuously changing to achieve smooth control of the spectrum. The invention can effectively simulate the physical field produced by the ship.
Owner:CSIC NO 710 RES & DEV INST

A kind of styrene-butadiene latex and its preparation method and application

The invention belongs to the field of asphalt modifiers, in particular to a styrene-butadiene latex and its preparation method and application. The preparation method provided by the present invention comprises the following steps: a) mixing emulsifier, molecular weight regulator, diffusing agent, free radical stabilizer, electrolyte and water to adjust the temperature, and when the temperature of the mixing system reaches 5-15°C, add the mixture to the mixing system Add butadiene, styrene, tertiary amine monomer and initiator to react; b) After the reaction is carried out for 4-6 hours, add a cross-linking agent to the reaction system, and then raise the temperature to 20-40°C to continue the reaction for 0.5-2 hours ; c) after the reaction, the obtained reaction product is mixed with an anti-aging agent and degassed to obtain styrene-butadiene latex. The method provided by the present invention can make the prepared styrene-butadiene latex have higher solids by adopting low-temperature two-stage polymerization, adding an appropriate amount of tertiary amine monomers to participate in copolymerization and adding an appropriate amount of organic matter containing active halogen groups as a crosslinking agent. content and excellent asphalt modification ability.
Owner:山东京博中聚新材料有限公司

Polycarbonate containing nonlinear optical chromophore and its synthesis method and application

The present invention relates to a polycarbonate containing nonlinear optical chromophores, a synthesis method and an application thereof. According to the present invention, bischloroformate and nonlinear optical chromophores containing double hydroxyl groups are subjected to copolymerization so as to successfully introduce the nonlinear optical chromophore molecule into the polymer chain segment of the polycarbonate, and concurrently a bisphenol monomer is introduced to adjust the number of the nonlinear optical chromophore molecules in the chain segment so as to effectively prepare the suspension connection type polycarbonate electro-optic material containing a certain amount of the nonlinear optical chromophore molecules; after the polycarbonate containing the nonlinear optical chromophores is dissolved with an organic solvent and then is subjected to film coating, the maximum electro-optic coefficient of the prepared polarized electro-optic polymer film is 75 pm / V, wherein the prepared electro-optical material has a high glass transition temperature, such that the nonlinear optical chromophore molecules have good orientational stability in the material; and the polycarbonate containing the nonlinear optical chromophores has the following structure.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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